CN111803443A - Praziquantel injection and preparation method thereof - Google Patents
Praziquantel injection and preparation method thereof Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/08—Solutions
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/16—Amides, e.g. hydroxamic acids
- A61K31/165—Amides, e.g. hydroxamic acids having aromatic rings, e.g. colchicine, atenolol, progabide
- A61K31/167—Amides, e.g. hydroxamic acids having aromatic rings, e.g. colchicine, atenolol, progabide having the nitrogen of a carboxamide group directly attached to the aromatic ring, e.g. lidocaine, paracetamol
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/4985—Pyrazines or piperazines ortho- or peri-condensed with heterocyclic ring systems
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7028—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages
- A61K31/7034—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin
- A61K31/704—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin attached to a condensed carbocyclic ring system, e.g. sennosides, thiocolchicosides, escin, daunorubicin
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- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
- A61K47/10—Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/28—Steroids, e.g. cholesterol, bile acids or glycyrrhetinic acid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/34—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/44—Oils, fats or waxes according to two or more groups of A61K47/02-A61K47/42; Natural or modified natural oils, fats or waxes, e.g. castor oil, polyethoxylated castor oil, montan wax, lignite, shellac, rosin, beeswax or lanolin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/10—Antimycotics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P33/00—Antiparasitic agents
- A61P33/10—Anthelmintics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P33/00—Antiparasitic agents
- A61P33/10—Anthelmintics
- A61P33/12—Schistosomicides
Abstract
The invention relates to a praziquantel injection and a preparation method thereof, belonging to the technical field of a praziquantel preparation for animals. The praziquantel injection comprises the following components in parts by weight: 60-100 parts of praziquantel; 25-35 parts of polyoxyethylene castor oil; 20-25 parts of tea saponin; 200-250 parts of propylene glycol; proper amount of water for injection. The invention improves the dispersibility and expansibility of the praziquantel injection by adding two emulsifiers of polyoxyethylene castor oil and tea saponin, the tea saponin is green and environment-friendly, has no harm to animals, can also have a certain synergistic effect on the efficacy of the praziquantel, simultaneously ensures that the praziquantel injection has an antibacterial effect, has obvious curative effects on schistosomiasis, tapeworm, coenurosis and the like, has the advantages of high curative effect, short treatment course, low cost, no adverse clinical reaction and the like, greatly improves the bioavailability and the effective blood concentration maintenance time of the praziquantel by adding a certain amount of polycaprolactone, and prolongs the effective treatment time of the praziquantel.
Description
Technical Field
The invention relates to a praziquantel injection and a preparation method thereof, belonging to the technical field of a praziquantel preparation for animals.
Background
Schistosomiasis is a zoonosis caused by schistosomiasis infection seriously harming human health and socioeconomic development, and is prevalent in 76 countries and regions all over the world. In large-scale complete snail killing and schistosomiasis vaccine clinicBefore the application is realized, the anti-schistosomiasis medicine is still a main means for preventing and treating schistosomiasis. Praziquantel is a broad-spectrum anti-schistosome and anti-taenia drug, and is suitable for various schistosomiasis, clonorchiasis sinensis, paragonimiasis, fascioliasis and cestodiasis and cysticercosis. Praziquantel is the first choice drug for preventing and treating schistosomiasis at present, and the action mechanism of the praziquantel is mainly that the activity of the schistosomiasis is excited through 5-hydroxytryptamine-like action and Ca is influenced2+The permeability of the cell membrane causes contraction of muscle and damage of cortex of the polypide, which leads to exposure of antigenic determinants on the surface of the polypide, and the immune effect of the host is exerted to promote death of the polypide.
Domestic animals, as the main parasite-protecting hosts and infectious sources, play an important role in the spread of schistosomiasis. The praziquantel is adopted to treat diseased livestock, so that the polypide in the diseased livestock is eliminated to the maximum extent, and the reduction or the elimination of the pollution of pathogeny to the environment is one of the important and effective measures for controlling schistosomiasis. At present, the praziquantel preparation approved by China for use in animals has two dosage forms of tablets and powder, but the clinical effect of the praziquantel is influenced because the praziquantel has the characteristics of low solubility, high permeability, obvious first-pass effect of oral administration and low bioavailability. Therefore, the development of a new preparation for improving the bioavailability and the effective blood concentration maintenance time of the praziquantel becomes a research hotspot for preventing and treating schistosomiasis.
Disclosure of Invention
The technical problem to be solved by the invention is that the existing praziquantel tablets and powder have low solubility, high permeability, obvious oral first-pass effect and low bioavailability, and the clinical effect of the praziquantel tablets and powder is influenced.
The technical scheme adopted by the invention for solving the technical problems is as follows: the praziquantel injection comprises the following components in parts by weight:
further, the praziquantel injection also comprises 3-10 parts by weight of polycaprolactone.
Further, the injection also comprises 1-5 parts by weight of di-tert-butyl hydroxy toluene.
Furthermore, the injection also comprises 0.5-1.5 parts by weight of an analgesic.
Further, the analgesic is lidocaine.
Further, the injection consists of the following components in parts by weight:
according to the preparation method of the praziquantel injection, the preparation of each 1000mL of the praziquantel injection specifically comprises the following steps:
A. adding polyoxyethylene castor oil and propylene glycol into praziquantel, and stirring for 1-2 hours at the temperature of 60-80 ℃ to obtain a mixed oil phase;
B. heating water for injection to 60-80 ℃, respectively adding tea saponin, polycaprolactone, di-tert-butylhydroxytoluene and lidocaine, stirring for dissolving, and mixing to obtain a mixed water phase;
C. adding the mixed oil phase into the mixed water phase, and shearing at a high speed for 8-12 min under the stirring of a high-speed shearing machine to obtain primary emulsion;
D. homogenizing the primary emulsion in a high pressure homogenizer for multiple times to obtain emulsion, adding water for injection to 1000mL, subpackaging, sealing, and sterilizing.
Further, in the preparation method of the praziquantel injection, the stirring speed of the high-speed shearing machine in the step C is 16000-18000 r/min.
Further, in the preparation method of the praziquantel injection, the pressure of the high-pressure homogenizer in the step D is set to be 60-65 MPa, and the temperature is set to be 75-85 ℃.
Further, in the preparation method of the praziquantel injection, the homogenization time in the step D is 3-6 times.
The invention has the beneficial effects that: the praziquantel injection disclosed by the invention has the advantages that the dispersibility and expansibility of the praziquantel injection are improved by adding two emulsifiers of polyoxyethylene castor oil and tea saponin, the tea saponin is green and environment-friendly, no harm is caused to an animal body, a certain synergistic effect can be realized on the drug effect of the praziquantel, meanwhile, the praziquantel injection has an antibacterial effect, and has obvious curative effects on schistosomiasis, tapeworm, polyermia and the like, particularly on goat trematosis, the praziquantel injection has the advantages of high curative effect, short treatment course, low cost, no adverse clinical reaction and the like, the bioavailability and the effective blood concentration maintenance time of the praziquantel are greatly improved by adding a certain amount of polycaprolactone, and the effective treatment time of the praziquantel is prolonged.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the following specific examples, but the scope of the present invention is not limited to the following.
The praziquantel injection comprises the following components in parts by weight:
it will be understood by those skilled in the art that the polyoxyethylated castor oil is obtained by condensing castor oil with ethylene oxide, also known as emulsifier EL, and is a nonionic surfactant, which in the present invention is both an emulsifier to provide emulsification and better dispersion and dissolution of praziquantel in the solvent mixture to provide a dispersing agent.
Tea saponin, also called tea saponin, is a glycoside compound extracted from tea seeds (tea seeds ), is a natural surfactant with good performance, in addition, tea saponin has strong hemolytic action and biological activities of disinsection, sterilization and the like, and related researches show that tea saponin also has the function of killing the oncomelania which is the intermediate host of schistosome, has obvious killing effect, is nontoxic, and can be biodegraded. In addition, a large number of experiments show that a certain amount of tea saponin can obviously enhance the drug effect of the praziquantel, so that the bioavailability of the praziquantel is greatly improved.
Preferably, the praziquantel injection further comprises 3-10 parts by weight of polycaprolactone. The polyhexamethylene lactone is used as a biodegradable controlled release carrier, so that the effect of slowly releasing the medicament can be achieved, the effective blood concentration maintaining time of the praziquantel is prolonged, and the bioavailability of the praziquantel is improved.
Preferably, the injection further comprises 1-5 parts by weight of di-tert-butyl hydroxy toluene. As can be understood by those skilled in the art, in order to prolong the efficacy of the solution formulation and to ensure that di-tert-butylhydroxytoluene is an antioxidant with excellent performance, the solution formulation preferably further comprises 1-5 parts by weight of di-tert-butylhydroxytoluene.
Preferably, the injection further comprises 0.5-1.5 parts by weight of an analgesic. As will be understood by those skilled in the art, the injection preferably further comprises 0.5 to 1.5 parts by weight of an analgesic in order to avoid causing discomfort in livestock.
Preferably, the analgesic is lidocaine. It will be appreciated by those skilled in the art that the present injection is convenient to formulate, but that the preferred analgesic is lidocaine.
Preferably, the injection consists of the following components in parts by weight:
according to the preparation method of the praziquantel injection, the preparation of each 1000mL of the praziquantel injection specifically comprises the following steps:
A. adding polyoxyethylene castor oil and propylene glycol into praziquantel, and stirring for 1-2 hours at the temperature of 60-80 ℃ to obtain a mixed oil phase;
B. heating water for injection to 60-80 ℃, respectively adding tea saponin, polycaprolactone, di-tert-butylhydroxytoluene and lidocaine, stirring for dissolving, and mixing to obtain a mixed water phase;
C. adding the mixed oil phase into the mixed water phase, and shearing at a high speed for 8-12 min under the stirring of a high-speed shearing machine to obtain primary emulsion;
D. homogenizing the primary emulsion in a high pressure homogenizer for multiple times to obtain emulsion, adding water for injection to 1000mL, subpackaging, sealing, and sterilizing.
Preferably, in the preparation method of the praziquantel injection, the stirring speed of the high-speed shearing machine in the step C is 16000 to 18000 r/min. As can be understood by those skilled in the art, in order to ensure that the colostrum prepared in the step C meets the requirement, and the mixed oil phase is added into the mixed water phase to be uniformly mixed, the step C preferably performs mixing under the condition that the stirring speed of a high-speed shearing machine is 16000-18000 r/min.
Preferably, in the preparation method of praziquantel injection, the pressure of the high-pressure homogenizer in the step D is set to be 60-65 MPa, and the temperature is set to be 75-85 ℃.
Preferably, in the preparation method of praziquantel injection, the homogenization time in the step D is 3-6 times.
EXAMPLE 1 Praziquantel injection preparation
The preparation method of 1000mL praziquantel injection specifically comprises the following steps:
A. adding 35g of polyoxyethylene castor oil and 250g of propylene glycol into 100g of praziquantel, and stirring for 1h at 75 ℃ to obtain a mixed oil phase;
B. heating water for injection to 65 deg.C, adding 25g tea saponin, stirring for dissolving, and mixing to obtain mixed water phase;
C. adding the mixed oil phase into the mixed water phase, and shearing at high speed for 12min under stirring by a high-speed shearing machine with the rotation speed of 1600r/min to obtain primary emulsion;
D. homogenizing the primary emulsion in a high pressure homogenizer under the homogenizing pressure of 60MPa and the homogenizing temperature of 85 deg.C, repeatedly homogenizing for 4 times to obtain emulsion, adding water for injection to 1000mL, packaging, sealing, and sterilizing to obtain praziquantel injection (wherein the praziquantel content is 100 mg/mL).
EXAMPLE 2 Praziquantel injection preparation
The preparation method of 1000mL praziquantel injection specifically comprises the following steps:
A. taking 60g of praziquantel, adding 25g of polyoxyethylene castor oil and 210g of propylene glycol, and stirring at 65 ℃ for 1.5h to obtain a mixed oil phase;
B. heating water for injection to 75 ℃, respectively adding 20g of tea saponin, 8g of polycaprolactone and 1.5g of lidocaine, stirring for dissolving, and mixing to obtain a mixed water phase;
C. adding the mixed oil phase into the mixed water phase, and shearing at high speed for 8min under stirring by a high-speed shearing machine with the rotation speed of 1800r/min to obtain colostrum;
D. homogenizing the primary emulsion in a high pressure homogenizer at a homogenizing pressure of 65MPa and a homogenizing temperature of 75 deg.C, repeatedly homogenizing for 3 times to obtain emulsion, adding water for injection to 1000mL, packaging, sealing, and sterilizing to obtain praziquantel injection (wherein the praziquantel content is 60 mg/mL).
EXAMPLE 3 Praziquantel injection preparation
The preparation method of 1000mL praziquantel injection specifically comprises the following steps:
A. adding 30g of polyoxyethylene castor oil and 210g of propylene glycol into 80g of praziquantel, and stirring at 75 ℃ for 1.5h to obtain a mixed oil phase;
B. heating water for injection to 80 ℃, respectively adding 22g of tea saponin, 6g of polycaprolactone and 3g of di-tert-butyl hydroxy toluene, stirring for dissolving, and mixing to obtain a mixed water phase;
C. adding the mixed oil phase into the mixed water phase, and shearing at high speed for 9min under stirring by a high-speed shearing machine with the rotation speed of 1700r/min to obtain colostrum;
D. homogenizing the primary emulsion in a high pressure homogenizer under the homogenizing pressure of 64MPa and the homogenizing temperature of 85 deg.C, repeatedly homogenizing for 6 times to obtain emulsion, adding water for injection to 1000mL, packaging, sealing, and sterilizing to obtain praziquantel injection (wherein the praziquantel content is 80 mg/mL).
EXAMPLE 4 Praziquantel injection preparation
The preparation method of 1000mL praziquantel injection specifically comprises the following steps:
A. adding 25g of polyoxyethylene castor oil and 240g of propylene glycol into 80g of praziquantel, and stirring at 65 ℃ for 1.5h to obtain a mixed oil phase;
B. heating water for injection to 70 ℃, respectively adding 25g of tea saponin, 5g of di-tert-butyl hydroxy toluene and 0.5g of lidocaine, stirring for dissolving, and mixing to obtain a mixed water phase;
C. adding the mixed oil phase into the mixed water phase, and shearing at high speed for 8min under stirring by a high-speed shearing machine with the rotation speed of 1800r/min to obtain colostrum;
D. homogenizing the primary emulsion in a high pressure homogenizer under the homogenizing pressure of 60MPa and the homogenizing temperature of 80 deg.C, repeatedly homogenizing for 3 times to obtain emulsion, adding water for injection to 1000mL, packaging, sealing, and sterilizing to obtain praziquantel injection (wherein the praziquantel content is 80 mg/mL).
EXAMPLE 5 Praziquantel injection preparation
The preparation method of 1000mL praziquantel injection specifically comprises the following steps:
A. adding 30g of polyoxyethylene castor oil and 230g of propylene glycol into 80g of praziquantel, and stirring at 70 ℃ for 2 hours to obtain a mixed oil phase;
B. heating water for injection to 70 ℃, respectively adding 23g of tea saponin, 8g of polycaprolactone, 3g of di-tert-butylhydroxytoluene and 1g of lidocaine, stirring for dissolving, and mixing to obtain a mixed water phase;
C. adding the mixed oil phase into the mixed water phase, and shearing at high speed for 10min under stirring by a high-speed shearing machine with the rotation speed of 1700r/min to obtain colostrum;
D. homogenizing the primary emulsion in a high pressure homogenizer at a homogenizing pressure of 62MPa and a homogenizing temperature of 80 deg.C, repeatedly homogenizing for 5 times to obtain emulsion, adding water for injection to 1000mL, packaging, sealing, and sterilizing to obtain praziquantel injection (wherein the praziquantel content is 80 mg/mL).
EXAMPLE 6 Praziquantel injection for treating goat cercaria
The test animal determines that a certain sheep farm in Panzhihua city, Sichuan province is screened out positive goats with schistosomiasis through blood examination, 70 goats (35 each male and female) with the age of 4 months are confirmed to be diagnosed through a fecal examination method, and the test sheep need to be determined to have no anti-parasite medication history and no other disease symptoms within 1 month. Under the same feeding conditions, 70 goats were randomly divided into 7 groups of 10 goats.
Treatment protocol group 1 test goats were not dosed as a placebo group; the goat in the group 2 takes praziquantel orally, and the mixed green grass is taken once a day according to the weight of 70mg/kg, and is taken for 2 days as an oral control group; on the 45 th day after inoculation, the test goats in the 3 rd to 7 th groups were injected subcutaneously with S1-S5 praziquantel injection respectively, and were injected 1 time per day for 2 days at a weight of 30 mg/kg.
The clinical condition of the diseased sheep is routinely checked before the medicine is taken, the feeling of the goat to pain is observed during the medicine taking, the disease sheep with the abnormal shape is respectively checked 1, 4 and 8 hours after the medicine taking, the disease sheep with the abnormal shape is observed every 30min, and the clinical reactions of different groups of disease sheep are compared; and (5) judging the condition that the diseased sheep turns negative after the medicine is taken by using a dung test method.
Results blank control group: in the experiment, 10 goats have salivation;
oral control group: in the experiment, 3 of 10 goats salivation, 1 of goat diarrhea and 1 of goat bloating;
subcutaneous injection group: the 3 rd group of goats can obviously feel pain during injection, have a phenomenon of resistance, produce a phenomenon of salivation in 1 goat and have no phenomena of diarrhea, ruminal tympany and the like of the goats; the goats in the group 4 had no feeling of injection pain during injection, and no phenomena of salivation, diarrhea, ruminal tympany and the like of the goats were caused; the goat in the 5 th group obviously feels pain during injection, has a phenomenon of resistance, and does not have the phenomena of salivation, diarrhea, ruminal tympany and the like of the goat; the 6 th group of goats can feel slight pain during injection, have no obvious resistance phenomenon, and have no phenomena of salivation, diarrhea, ruminal tympany and the like of the goats; the 7 th group of goats did not respond to pain during injection, and no phenomena of salivation, diarrhea, ruminal tympany and the like appeared in the goats.
The examination of other clinical items of the goats in the experimental group is basically the same as that before the drug.
Dung examination is carried out on schistosome eggs of all groups of goats 15 days, 30 days and 60 days after the drug administration, 46 sheep in the subcutaneous injection group (3-7 groups) are all negative, and the negative conversion rate is 92%; the oral control group averagely turns negative 6 heads, the negative turning rate is 60 percent, the blank control group does not turn negative, and the negative turning rate is 0 percent.
Claims (10)
1. The praziquantel injection is characterized in that: the injection comprises the following components in parts by weight:
2. the praziquantel injection of claim 1, wherein: the injection also comprises 3-10 parts by weight of polycaprolactone.
3. The praziquantel injection of claim 2, wherein: the injection also comprises 1-5 parts by weight of di-tert-butyl hydroxy toluene.
4. The praziquantel injection of claim 3, wherein: the injection also comprises 0.5-1.5 parts by weight of an analgesic.
5. The praziquantel injection of claim 4, wherein: the analgesic is lidocaine.
6. The praziquantel injection of claim 5, wherein: the injection consists of the following components in parts by weight:
7. the method for preparing praziquantel injection according to any one of claims 1 to 6, wherein: the preparation of praziquantel injection per 1000mL comprises the following steps:
A. adding polyoxyethylene castor oil and propylene glycol into praziquantel, and stirring for 1-2 hours at the temperature of 60-80 ℃ to obtain a mixed oil phase;
B. heating water for injection to 60-80 ℃, respectively adding tea saponin, polycaprolactone, di-tert-butylhydroxytoluene and lidocaine, stirring for dissolving, and mixing to obtain a mixed water phase;
C. adding the mixed oil phase into the mixed water phase, and shearing at a high speed for 8-12 min under the stirring of a high-speed shearing machine to obtain primary emulsion;
D. homogenizing the primary emulsion in a high pressure homogenizer for multiple times to obtain emulsion, adding water for injection to 1000mL, subpackaging, sealing, and sterilizing.
8. The method for preparing praziquantel injection according to claim 7, wherein: and C, stirring speed of the high-speed shearing machine in the step C is 16000-18000 r/min.
9. The method for preparing praziquantel injection according to claim 7, wherein: and D, setting the pressure of the high-pressure homogenizer to be 60-65 MPa and setting the temperature to be 75-85 ℃.
10. The method for preparing praziquantel injection according to claim 7 or 9, wherein: and D, homogenizing for 3-6 times.
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Cited By (1)
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| CN116983396A (en) * | 2023-08-09 | 2023-11-03 | 浙江省农业科学院 | Rabbit bronchogenic bordetella inactivated vaccine emulsion, and preparation and application thereof |
Citations (6)
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| WO2005084688A1 (en) * | 2004-03-04 | 2005-09-15 | Yuwan Wang | An injection power containing vermifuge |
| EP2543370A1 (en) * | 2011-07-06 | 2013-01-09 | Georgia Health Sciences University Research Institute, Inc. | Compositions and Methods for Treating Herpes Simplex Virus |
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| CN109430259A (en) * | 2018-09-29 | 2019-03-08 | 绩溪农华生物科技有限公司 | A kind of pesticide powder and preparation method thereof |
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| WO2005084688A1 (en) * | 2004-03-04 | 2005-09-15 | Yuwan Wang | An injection power containing vermifuge |
| EP2543370A1 (en) * | 2011-07-06 | 2013-01-09 | Georgia Health Sciences University Research Institute, Inc. | Compositions and Methods for Treating Herpes Simplex Virus |
| CN103432074A (en) * | 2013-09-09 | 2013-12-11 | 攀枝花市农林科学研究院 | Praziquantel emulsion injection and preparation technology thereof |
| CN105816421A (en) * | 2016-05-03 | 2016-08-03 | 中国农业科学院兰州畜牧与兽药研究所 | Praziquantel nanoemulsion in situ gel for preventing and treating bilharziasis and preparation method and application thereof |
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| CN116983396A (en) * | 2023-08-09 | 2023-11-03 | 浙江省农业科学院 | Rabbit bronchogenic bordetella inactivated vaccine emulsion, and preparation and application thereof |
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